diff --git a/rust/kernel/bug.rs b/rust/kernel/bug.rs
index ed943960f851..a09e6c9b314e 100644
--- a/rust/kernel/bug.rs
+++ b/rust/kernel/bug.rs
@@ -53,6 +53,10 @@ macro_rules! warn_flags {
     ($file:expr, $flags:expr) => {
         const FLAGS: u32 = $crate::bindings::BUGFLAG_WARNING | $flags;
 
+        if false {
+            _ = $file;
+        }
+
         // SAFETY:
         // - `flags` and `size` are all compile-time constants, preventing
         // any invalid memory access.
@@ -76,6 +80,10 @@ macro_rules! warn_flags {
 #[cfg(all(CONFIG_BUG, CONFIG_UML))]
 macro_rules! warn_flags {
     ($file:expr, $flags:expr) => {
+        if false {
+            _ = $file;
+        }
+
         // SAFETY: It is always safe to call `warn_slowpath_fmt()`
         // with a valid null-terminated string.
         unsafe {
@@ -94,6 +102,11 @@ macro_rules! warn_flags {
 #[cfg(all(CONFIG_BUG, any(CONFIG_LOONGARCH, CONFIG_ARM)))]
 macro_rules! warn_flags {
     ($file:expr, $flags:expr) => {
+        if false {
+            _ = $file;
+            _ = $flags;
+        }
+
         // SAFETY: It is always safe to call `WARN_ON()`.
         unsafe { $crate::bindings::WARN_ON(true) }
     };
@@ -103,7 +116,12 @@ macro_rules! warn_flags {
 #[doc(hidden)]
 #[cfg(not(CONFIG_BUG))]
 macro_rules! warn_flags {
-    ($file:expr, $flags:expr) => {};
+    ($file:expr, $flags:expr) => {
+        if false {
+            _ = $file;
+            _ = $flags;
+        }
+    };
 }
 
 #[doc(hidden)]
@@ -118,14 +136,14 @@ macro_rules! warn_on {
         let cond = $cond;
 
         #[cfg(CONFIG_DEBUG_BUGVERBOSE_DETAILED)]
-        const _COND_STR: &str = concat!("[", stringify!($cond), "] ", file!());
+        const COND_STR: &str = concat!("[", stringify!($cond), "] ", file!());
         #[cfg(not(CONFIG_DEBUG_BUGVERBOSE_DETAILED))]
-        const _COND_STR: &str = file!();
+        const COND_STR: &str = file!();
 
         if cond {
             const WARN_ON_FLAGS: u32 = $crate::bug::bugflag_taint($crate::bindings::TAINT_WARN);
 
-            $crate::warn_flags!(_COND_STR, WARN_ON_FLAGS);
+            $crate::warn_flags!(COND_STR, WARN_ON_FLAGS);
         }
         cond
     }};